Answer:
19.2cm²
Step-by-step explanation:
Given parameters:
Radius of the circle = 7cm
Angle subtended by the arc = 45°
Unknown:
Area of the sector = ?
Solution:
To find the area of the sector, use the expression below;
Area of sector = 
where r is the radius ;
Insert the parameters and solve;
Area of sector = 
x 
x 7²
Area of sector = 19.2cm²
Answer:
48000
Step-by-step explanation:
y more than 4 means you are adding y to 4 so the equation would be
4+y = -36
Answer:
105 per hour = x
Step-by-step explanation:
You subtract the parts cost of 77 from the total first.
497 - 77 = 420
Then you divide the 420 by 4 to get the unit rate per hour.
420/4
= 105
Answer:
15a^6 + 15a^2b.
Step-by-step explanation:
5a^2(3a^4 + 3b)
= 15a^6 + 15a^2b.
